Sansom is a surname. Notable people with the surname include:
Ann Sansom, English poet
Art Sansom (1920–1991), American cartoonist
Arthur Ernest Sansom (1838–1907), English medical doctor
C. J. Sansom (born 1952), British writer
Chip Sansom, American comic strip cartoonist
Clive Sansom (1910–1981), British-born Tasmanian poet and playwright
Emma Sansom (1847–1900), American Civil War person
Ernest William Sansom (1890–1982), Canadian general
Gareth Sansom (born 1939), Australian artist
George Bailey Sansom (1883–1965), British historian
Ian Sansom (born 1966), English writer
Ivan Sansom, British palaeontologist
Ken Sansom (1927–2012), American actor and voice actor
Kenny Sansom (born 1958), English footballer
Peter Sansom (born 1958), English poet
Philip Sansom (1916–1999), British writer and anarchist
Ray Sansom (born 1962), American politician
Rosa Olga Sansom (1900–1989), New Zealand educator, botanist and writer
William Sansom (1912–1976), English writer